Hotel Collection by Shifman's Sophia 15" Plush Pillowtop Mattress is a two-sided, flipable mattress with cotton comfort layers that provide long lasting comfort, support, and durability with cooling properties. Layers of super firm high-density foam and Mirafil fiber provide additional support along with a luxurious feel. Shifman's luxurious, handcrafted mattresses are made in the USA, and built with the same commitment to quality, integrity and true craftsmanship that the company was founded on in 1893. Remaining true to its roots, this family owned company based out of Newark, New Jersey will continue its tradition of excellence in creating handmade mattresses.